making a mash tun using barrier pipe?

[lord groan]

thanks everyone, good advice.
Darkonnis I've asked my local Indian takeaway ( a different one to the 1st!) if they chuck mango barrels out and was promised a "big" one at the end of the month if I go back. Will have to wait and see what "big" means, and see if they even remember me! Fingers crossed for something around the 60l size, not holding my breath though!